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Subject[PATCH 3/3] mmc: mxs-mmc: call dmaengine API to set mmc->max_segs
Date
With dmaengine API dma_get_max_seg_number added, we now can call
the API to get and number and then set mmc->max_segs instead of
hard-coding it.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
drivers/mmc/host/mxs-mmc.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 99d39a6..d783af3 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -745,11 +745,15 @@ static int mxs_mmc_probe(struct platform_device *pdev)
mmc->f_max = 288000000;
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;

- mmc->max_segs = 52;
mmc->max_blk_size = 1 << 0xf;
mmc->max_blk_count = (ssp_is_old()) ? 0xff : 0xffffff;
mmc->max_req_size = (ssp_is_old()) ? 0xffff : 0xffffffff;
mmc->max_seg_size = dma_get_max_seg_size(host->dmach->device->dev);
+ /*
+ * Reserve one segment for carrying on pio words to get dma engine
+ * program mmc controller registers
+ */
+ mmc->max_segs = dma_get_max_seg_number(host->dmach->device->dev) - 1;

platform_set_drvdata(pdev, mmc);

--
1.7.4.1



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